A restaurant launches a mobile app that allows customers to rate their food on a scale from -5 to 5 . Customers gave the lasagna scores of 2.25 , -3.5 , 0 , -4.5 , 1.75 , -1 , 3.5 , and -2.5 . Then the restaurant receives additional scores of -0.75 , -1.5 , -1.25 , 4.75 , -0.25 , -0.5 , 5 , and -0.5 for the lasagna. Given the additional data, should the restaurant consider changing the recipe?